The teams met in the playoffs 4 times in the 90s. Rockets beat Jazz in both of their championship seasons.

Of course the Stockton shot to send the Jazz to the finals (while Mailman gave Drexler a bear hug illegal screen)

The Dream slap scottsy mentioned.

The home court Jazz clock operator in '94. (link below)

Current Rockets PBP Craig Ackerman notes the rivalry by always starting his game calls against Utah referencing 'the hated Utah Jazz'

Over the years I've heard multiple first hand accounts on Houston radio from former players or media members who traveled for games that some Jazz fans were known for racial comments to opposing players. Don't shoot the messenger. I'm sure over 30 years there were never any actual incidents and it was just sensitive players.